Machine for making split keys



(No Model.) 2 Sheets-Sheet 1. R. T. KING.

MACHINE FOR MAKING SPLIT KEYS.

No. 277,577. Patented May 15,1883.

raphvr. Washinslom 11c,

2 SheetsSheet 2.

(No Model.)

B; T. KING.

MACHINE FOR MAKING SPLIT KEYS.

Patented May 15, 1883.

' WITNESSES v 5 UNITED STATES ATENT OFFieE.

ROBERT T. KING, OF COLUMBUS, OHIO.

MACHINE FOR MAKING SPLIT KEYS.

SPECIFICATION forming part of Letters Patent No. 277,577, dated May 15,1883,

Application filed February 6,1883.

Ohio, have invented a new and useful Machinefor Making Split Keys, ofwhich the following is a specification, reference being had to the vaccompanying drawings.

This invention relates to machines for making split keys, and has forits object to provide a simple and efficient automatic mechanism forfeeding the wire or strip from which the keys are made. This automaticfeed mechanism'is adapted for operation in connection with my split-keymachine patented to me August 15, 1882, No. 262,898, and my presentinvention further embodies improvements on the said machine.

In the drawings, Figure l is a perspective view of a split-key machineembodying my improvements, and having the automatic feed mechanism. Fig.2 is a plan view thereof. Fig. 3 is a detail perspective view of thebending-dies, their operating-rod, the knife-box, and adjacentmechanism. Fig. 4 is a detail perspective view of the feed mechanism.Fig. 5 is a detail cross-section of Fig. 2.

Referring to the drawings, A designates the bed or table of the machine,which is mounted upon a suitable frame, B, and carries at one end arotary cam-shaft, 0, having the cutteroperating cam D and the cam E,foroperating the bending and discharging mechanism. F is thereciprocating knife-stock, which carries the knife G, works throughguides H and I, and is operated by the cam D and a retracting-spring, J.This cutter G is for cutting off the key-blanks from the strips of wireas the latter is fed against a gage, K, at the other side of the table.L L designate the bending dies, that are pivoted together, and areconnected by links M with a reciprocating bar or rod, N, operated by thecam E and a retracting-spring, 0. P is the forming-pin, and Q is a slotin the table, through which the keys fall after being formed. All ofthis mechanism is substantially the same as that shown in myabove-mentioned former patent, except that the table is preferablyinclined from the end that carries the rotary shaft, as herein shown,and the stop-gage K is adjustable toward the forming-pin by means of aset-screw,

(No model.)

B, passing through a slot, S, in the said gageplate; The table A is alsoprovided with, in lieu of the stationary cutter shown in theabove-mentioned patent, a knife-box, T, formed with a longitudinal slot,U, in which the knife works, and having across stop-pin,V, against whichthe knife comes. This knife-box T is laterally adjustable on the tableby means of a pin or extension, W, projecting from its under side, andworking in a cross-slot, X, in the table A, the said pin being securedby 'a nut, Y, or equivalent device. The guides H and I are laterallyadjustable, like the box T, so that all of this cutting mechanism can beadjusted laterally in connection with the stopgage K, to cut offdifferent lengths of blanks for corresponding varying sizes of keys. Asherein shown, the arms Z of the bending-dies or forming-jaws L L projectfrom the top of the main portion of thejaws, so that they can, ifnecessary, work over the knife-boxes. The reciprocating bar or rod N isalso raised to the height of the arms Z Z.

I will now proceed to describelhe automatic feed mechanism. At thebottom of thefraine of the machine is arranged a cross-bar, A to whichis hinged an upwardlyextending feedbar, B having a head, 0 formed withan ex tension or arm, D", and with a slot, E as shown. In this slot ispivoted a lever-clampingjaw, F, that is retained open by a spring, G, onthe arm I)". The feed-bar B is forced from the frame of the machine by acontinuously-acting spring, H arranged on the crossbar A 1 is a lateral]y-projectin g guide-bar, that ex tends from the frame of the machine,and is provided with a longitudinally-disposed slot, J, in which worksthe feed-bar B At the outer end of the guide-bar I is arranged'a.right-angular plate, K, on top of which are pivoted a pair ofcam-guides, L L that are braced and connected by a top crossplate, M andare provided with pins or extensions N on top, around which is arrangeda spring, 0 that holds the cams together.

P is a guide-plate secured to the side of the machine, on a line withthe slot in the feedbar and the cams, so that the wire or strip is fedinto the machine on the desired line.

Q is a curved arm, arranged on the drivingshaft, and adapted to engagethe spring-actuated lever 1 as the driving-shaft revolves to close thesaid lever, so that its end binds against the side of the slot in thefeed-bar.

In operation the automatic feed mechanism effects the feed of the wirein the following manner: The end of the wire or strip is first insertedbetween the cams L and through the slot in the feed-bar B and throughthe guide 1? up to the edge of the knife. Now, when the driving-shaftisrevolved the curved arm thereon comes against the lever F so that theend of the latter, inside the slot of the feed-bar binds the wire firmlyagainst the side of the slot, and the said curved arm forces the feedbarB toward the machine. As the said feedbar is carried toward the machineitfeeds the wire or strip into the latter against the guidegage K, whenit is cut 011' by the knife. As soon as the arm on the driving-shaftpasses from engagement with the lever F the latter releases its holdupon the wire and is forced back to its normal position by the spring 11the wire being held from backward movement during this operation of thefeed-bar by the cams L L I claim as my invention 1. The combination ofan upright feed-bar,

hinged at its bottoin,and havingahead formed with a transverse slot,ahorizontallydisposed spring-actuated lever secured to thehead andworking in the slot, mechanism at the outer end of the plane of movementof the hinged feed-bar for holding the wire or strip after it is carriedforward by movement of the said feed-bar, and the horizontal rotaryshaft having the curved lateral arm arranged to intermittently engagethe clamping-lever as the shaft is revolved, as set forth.

2. The combination of an upright feed-bar hinged at its lower end, andhaving a head formed with a transverse slot and with a horizontalextension carrying the laterally-acting spring, the retracting-springarranged to act upon the lower end of the feed bar, the clamping-leverfulcrumed to the head and working in the same, the said lever beingactuated by the laterally-acting spring, clamping-cams arranged at theouter end of the plane of movement of the feed-bar, and the horizontalrotary operating-shaft, having the curved lateral arm arranged tointermittently engage the clamping-lever as the shaft is revolved,as

. set forth.

3.v The combination of the upright feed-bar hinged at its lower end, andprovided with a head having a slot and a horizontal extension, on whichis arranged a laterally-actin g spring, the clamping-lever actuated bythis spring and working in the slot in the head, the horizontal feed-barguide projecting laterally from the frame of the machine, thevertically-pivoted pair of clamping-cams, held together by the spring,so that they will embrace the wire or strip as it passes between themand hold it after it has been carried forward by the feedbar, as setforth.

4. The combination, with a split-key ma chine, having the adjustablestop-gage, forming-jaws, a cutter arranged in laterally-adjust ableguide-boxes, and operating mechanism, and a laterallyprojectingslottedguide-bar, of a hinged feed-bar having a slotted head, a clamping-leverworking in said slot, the holding-cams, and an arm on the driving-shaftof the machine arranged to'engage the said lever, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

ROBERT THOMAS KING.

Witnesses:

1 1W. ARNOLD, E. THos. HUGHES.

